SWIFT ISO 15022 - Code PHDE Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Physical to Dematerialised: Change from physical into dematerialised form. Usages Message type Field number Tag MT564 (Corporate Action Notification) 51 22F (Indicator) MT565 (Corporate Action Instruction) 39 22a (Indicator) MT566 (Corporate Action Confirmation) 37 22F (Indicator)